This cross-section runs broadly E-W across the Norwegian Caledonides. from the foreland near the Oslo area in the east over to the coast in the west. The North Sea and related basins have chopped the back off from the orogen so that the original hinterland lies in the Atlantic continental margin, overlain and forming the basement to, late Palaeozoic and Mesozoic sediments. This cross-section is simplified from the version by Milnes et al. (1997, Spec. Publ Geol Soc Lond 121, their fig. 1). The two major normal fault systems shown here are: LGF - Laerdal-Gjende Fault Zone; NSD - Nordfjord-Sogn Detachment Zone. Both are considered to pass displacement downwards into distributed shearing in the lower crust. Eclogites of the WGR are exhumed in the footwall to the NSD. The hanging-wall to this detachment system includes weakly metamorphosed rocks originally from high up in the Caledonian orogenic crust (the "Upper Allochthon") together with syn-rift sediments that fill the Hornelen Basin.  KEY - see main map.
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